Trait syn::parse::Peek

source ·
pub trait Peek: Sealed { }
Available on crate feature parsing only.
Expand description

Types that can be parsed by looking at just one token.

Use ParseStream::peek to peek one of these types in a parse stream without consuming it from the stream.

This trait is sealed and cannot be implemented for types outside of Syn.



impl<F: Copy + FnOnce(TokenMarker) -> T, T: Token> Peek for F